Data / Rankings / Population aged 65 and over / Counties in Pennsylvania

Counties in Pennsylvania by share of population aged 65 and over

Sullivan County had the highest share of population aged 65 and over of 67 counties in 2024, at 33.5%. Philadelphia County had the lowest, at 15.6%. The median was 23.2% and the figure for Pennsylvania was 21%. Source: the U.S. Census Bureau.

Highest33.5Sullivan County
Lowest15.6Philadelphia County
Median23.267 counties
Pennsylvania21History

Top 40 counties, 2024

CSVChart (SVG)

Sullivan CountySullivan County: 33.5 %33.5Cameron CountyCameron County: 30.2 %30.2Potter CountyPotter County: 28.1 %28.1Wayne CountyWayne County: 26.7 %26.7Venango CountyVenango County: 26.5 %26.5Susquehanna CountySusquehanna County: 26.4 %26.4Westmoreland CountyWestmoreland County: 26.1 %26.1Warren CountyWarren County: 26 %26Armstrong CountyArmstrong County: 25.8 %25.8Somerset CountySomerset County: 25.8 %25.8Elk CountyElk County: 25.8 %25.8Cambria CountyCambria County: 25.7 %25.7Bedford CountyBedford County: 25.7 %25.7Forest CountyForest County: 25.6 %25.6Pike CountyPike County: 25.1 %25.1Montour CountyMontour County: 25 %25Tioga CountyTioga County: 25 %25Lawrence CountyLawrence County: 24.9 %24.9Mercer CountyMercer County: 24.9 %24.9Fayette CountyFayette County: 24.6 %24.6Jefferson CountyJefferson County: 24.6 %24.6Beaver CountyBeaver County: 24.3 %24.3Crawford CountyCrawford County: 24.3 %24.3Clearfield CountyClearfield County: 24.1 %24.1Blair CountyBlair County: 24.1 %24.1Adams CountyAdams County: 24 %24Carbon CountyCarbon County: 23.9 %23.9Huntingdon CountyHuntingdon County: 23.9 %23.9Washington CountyWashington County: 23.9 %23.9Wyoming CountyWyoming County: 23.8 %23.8Fulton CountyFulton County: 23.8 %23.8Northumberland CountyNorthumberland County: 23.3 %23.3Bradford CountyBradford County: 23.3 %23.3Clarion CountyClarion County: 23.2 %23.2Greene CountyGreene County: 23.1 %23.1Mifflin CountyMifflin County: 23.1 %23.1McKean CountyMcKean County: 22.9 %22.9Schuylkill CountySchuylkill County: 22.8 %22.8Butler CountyButler County: 22.5 %22.5Lycoming CountyLycoming County: 22.5 %22.5
%. Source: Invokely calculation with data from U.S. Census Bureau. Retrieved 2026-10-09.

Full ranking

RankCounties2024 (%)Change on 2023
1Sullivan County33.5+1 pts
2Cameron County30.2+0.8 pts
3Potter County28.1+0.5 pts
4Wayne County26.7+0.7 pts
5Venango County26.5+0.6 pts
6Susquehanna County26.4+0.7 pts
7Westmoreland County26.1+0.6 pts
8Warren County26+0.6 pts
9Armstrong County25.8+0.7 pts
10Somerset County25.8+0.5 pts
11Elk County25.8+0.6 pts
12Cambria County25.7+0.5 pts
13Bedford County25.7+0.7 pts
14Forest County25.60 pts
15Pike County25.1+0.9 pts
16Montour County25+0.7 pts
17Tioga County25+0.6 pts
18Lawrence County24.9+0.6 pts
19Mercer County24.9+0.5 pts
20Fayette County24.6+0.5 pts
21Jefferson County24.6+0.6 pts
22Beaver County24.3+0.6 pts
23Crawford County24.3+0.5 pts
24Clearfield County24.1+0.6 pts
25Blair County24.1+0.4 pts
26Adams County24+0.8 pts
27Carbon County23.9+0.5 pts
28Huntingdon County23.9+0.6 pts
29Washington County23.9+0.6 pts
30Wyoming County23.8+0.5 pts
31Fulton County23.8+0.6 pts
32Northumberland County23.3+0.4 pts
33Bradford County23.3+0.5 pts
34Clarion County23.2+0.4 pts
35Greene County23.1+0.8 pts
36Mifflin County23.1+0.3 pts
37McKean County22.9+0.5 pts
38Schuylkill County22.8+0.3 pts
39Butler County22.5+0.7 pts
40Lycoming County22.5+0.6 pts
41Bucks County22.4+0.6 pts
42Indiana County22.4+0.4 pts
43Perry County22.4+0.5 pts
44Juniata County22.2+0.5 pts
45Lebanon County22.2+0.4 pts
46Clinton County22.2+0.3 pts
47Lackawanna County22+0.3 pts
48Franklin County21.8+0.3 pts
49Northampton County21.7+0.5 pts
50Columbia County21.6+0.4 pts
51Snyder County21.6+0.6 pts
52Allegheny County21.5+0.5 pts
53Erie County21.4+0.6 pts
54Luzerne County21.3+0.2 pts
55Lancaster County21.1+0.5 pts
56Monroe County20.9+0.8 pts
57Montgomery County20.7+0.5 pts
58Cumberland County20.5+0.3 pts
59Union County20.5+0.2 pts
60York County20.1+0.4 pts
61Berks County19.6+0.4 pts
62Chester County19.3+0.5 pts
63Lehigh County19.3+0.4 pts
64Dauphin County19.2+0.4 pts
65Delaware County19.1+0.5 pts
66Centre County17+0.5 pts
67Philadelphia County15.6+0.3 pts

Other periods

About this ranking

Residents aged 65 or over as a percentage of total population. Spain: 1 January, INE annual census. United States: 1 July, Census Bureau population estimates. World Bank figures for other countries and the World refer to mid-year.

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

U.S. Census Bureau. Population Estimates Program, county population by age and sex (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/counties/asrh/cc-est2025-agesex-all.csv. Retrieved 2026-10-09.

Use this data in your AI agent

Invokely serves this figure to AI assistants through MCP and to code through a REST API, with the source and citation attached. Ask your assistant:

Rank Counties in Pennsylvania by share of population aged 65 and over using official data, and cite the source.
rank_places {"indicator":"population_65_plus_share","level":"province","within":"Pennsylvania","limit":10}
GET https://invokely.ai/api/v1/rank?indicator=population_65_plus_share&level=province&within=Pennsylvania&limit=10

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Questions

Which county has the highest share of population aged 65 and over?

Sullivan County, with 33.5% in 2024, according to the U.S. Census Bureau.

Which county has the lowest share of population aged 65 and over?

Philadelphia County, with 15.6% in 2024.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: U.S. Census Bureau, Population Estimates Program, county population by age and sex (cc-est agesex): residents aged 65 and over as a percentage of the total, 1 July; states and the nation summed from counties. Retrieved 2026-10-09.

Population aged 65 and over: other rankings

Counties in Pennsylvania: more rankings